Dental-mouth-mirror support



(No Model.)

0. P. M YERS. DENTAL MOUTHMIRROR SUPPORT.

Patented Jan. 7, 1896.

ANDCW BBRANAM. FNOTO-LITNQWASH I NGTONJJ C,

NITED STATES m ren ATENT DENTAL-MOUTH-MIRRQR SUPPORT.

SPECIFICATION forming part of Letters Patent No. 552,693, dated January '7, 1896. 4

Application filed February 24, 1894. Serial No. 501,&0'7. (No model.) i

To cZZ whom it may conccrn:

Be it known that I, OLIVER PERRY MYERS, a citizen of the United States, residing in the city and county of San Francisco and State of California, have invented certain new and useful Improvements in Adjustable supports for Dental Mirrors and other Appliances, of which the following is a specification.

This invention relates to appliances for holding dental mirrors and other tools of the dentist in working .or acting position at the Operating-chair; and the invention consists in the described Construction and combina-. tion of parts producing an improved device or attachment that is capable of being fixed in position for 'use on most any of the present styles or constructions of dentists Operatingchairs, and that possesses besides such qualities of universal adjustment in its parts or members that it will hold in a steady and reliable manner a mirror or other appliance in any position for use without interfering with the operator at the chair.

The following description explains the nature of my said improvements and the manner in which I have constructed and combined the same for operation and use, reference being had therein to the accompanying drawings, forming part of this specification.

In the said drawings, Figure 1 is a View in perspectve of the complete device with a dental mirror fixed in the socket on the end. Fig. 2 is a View on an enlarged scale of two members or sections and the joint that unites them. In the lower part of this figure the upper portion of the socket by which the holder is fixed to the chair is shown in section. Fig. 3 is a detail View, partly in section and on an enlarged scale, of the onter member or section and the adjustable holder for the 'mirror or other appliance on the outer end. Fig. 4: is a perspective View of one of a set of clamps by which the tubular socket of the device is Secured to the frame of the dental chair. Fig. 5 is a detail View, mostly in section, of the 'adjustable socket and holder for the mirror or other part on the end of the device. Fig. 6 is a view in perspective of a clamp and an adj ustable socket of another Construction for attaching my device to styles of dental chairs to which the form of clamp shown in Figs. 1 and 4: cannot be applied. Fig. 7 is a View in detail of the socket portion of the clamp, i

Fig. 6. i

Referring by letter to the parts in these figures of the drawings, A represents a tubular socket open at both ends, with the upper end split longitudinally, as indicated at a* and A a clamp fittedaround such split portion to contract it at the end of the socket. This piece A' is a split ferrule with ears a and a thumb-screw A In one ear is a threaded hole for the screw, and in the other ear, against which the head of the screw works, a smooth hole.

B represents a rod fitted to slide longitndinally and also rotatable or movable aXially in the socket A, in which it is clamped and held at any point by tightening the screw A hen the socket A is fixed to the chair-frame the part B before mentioned can be moved and adjusted longitudinally and also axially by turning it within the socket. j C indicates a tubular rod and C' a solid cylindrical rod formi'ng'a telescopic or extensible member or part of the section. These two last-mentioned parts are connected by a hinge-joint composed of a leaf or knnckle b on the end of the part B and a pair of knuckles Z 19 on the adjacent end of the part. C is a screw-bolt set through the eyes or holes in the knuckles before mentioned, and C is a nut on the same. By these parts the hinge is ti ghtened and any loose movement is taken.

up. By tightening the screw also the hinge is converted into a fixed or rigd joint The part 0 is tubular for the whole or greater portion of its length, and the part O' being fitted to slide snoothly in it may be a solid rod. 0 is a tapering sleeve screwthreaded'internally and fitted to work on the tube C and clamp the two parts, the end of the tube O being split longitudinally and the rod C' threaded on the external surface to take the sleeve 0 Sufficient degree of frietion is produced by this sleeve to prevent the part G' from turning in, that tubular piece. The next member of the device is similarly formed of the tubular section D and the rod D' movable longitudinally and also capable of being turned within the tube. The end of the tubular part D is screw-threaded and split and fitted with a threaded sleeve 0 for a IOO clamp, acting in the same manner as the means and clamp on the section C C'. The section D D' is 'united to the section C C' by a hinge-jont in the same manner as the section C O' is connected to the rod B, and the same Construction is followed in the case ofthis second joint. On the end of this lastdescribed section-or member of `the device is an adjustable holder with a socket and clamp to receive and securely hold the mirror or other appliance. This part is composed of a tubular socket E open at both ends and at,- tached to the outer end of the memberD' by a hinge joint; Into this socket-piece E is set a tubular piece F having one end spli-t and fitted with a threaded sleeve F and a cylindrical rod or spindle G is fitted in the piece F- to slide longitudinally and also capable of being rotated in the aforesaid part F. One end of this spindle is provided with a milled head g' for turning it, and in the opposite end a socket 9 is formed to receive a tang or piece on the mirror or other appliance, which is inserted in the socket in attaching it to this holder. The sleeve E is attached to the eX- tensible part D D' by a hinged d the pin (2 of which is formed of a screw, so that any degree of f'iction can be produced at this joint by tightening or loosening the screw. The clampF on the end of the tube F is construc'ted like the clamp on the sections C C' and D D'.

In some cases'l find it better to increase the number of telescopic or adjustable sections or members of this device, and in some styles or makes of 'dental chairs an additional extensibleor telescopicsections on the end of the section D D' will be found to Work to` advantage. There are some styles of chairs, however, 'on which the 'holder constructed with the upright section A and the twohorizontally-disposed sections 'C C' D D' will work or operate satisfactorily. As thus constructed and put together the sections C O' and D D' are eXtensible in length at the joints and the sliding members O' D' are rotatable or capable of being turned aXially within the tubular members. In addition to these movements the two sectionsare movable in angular directions with respect to each other by virtue of the hinge-joints, and thereby such universality of adjustment is allowed that the mirror or otherifixed piece on the outer end of the device can be set in any position and in all possible positions of use without obstructing the proper use of the instruments and tools while Operating on a patient, and will beheld firmly and steadily by the'holder in any such position of adjustmentiwithout danger of dropping or moving out of place.

By securing the socket A for the lower member B of the upright section to the frame of the Operating-chair by means of a clamp or strapsecured to the frame the entire holder can be removed and` replaced as often as required foruse by sinply loosening the clamp A' and drawing the rod B out of the socketpiece A. Ordinarily the device need not be removed from the chair, but it can be turned back away from the front,` so that it extends directly'behind the chair toward the rear, such position out of use being obtained by turning the rod B around within the socket A or by turning the two sections O C' D D' at the hinge-joints, so that they stand perpendicularly upward and in line with the sections A A, or, in'- another way, by setting the two sections O C D D' in a straight line and then turning them horizontally backward or to the reara-t thehinge-joint between B and O.

Additional scope and also readiness of adjustment of the mirror or appliance carried by the holder is afforded by the peculiar constructon andrarrangement of the socket and spindle F' C before described. It should be noticed that the spindle C is fitted to move longitudinally within the tubular' member F and is also rotatable or can be turned to change tle angle of the mirror, and in addition to these adj ustments the socket F, which connects the tubular memberD to: the end of the outer section D is adj ustablein different angles by virtue of the hinge CZX d the direction of which can be changed by rotating the member D' in the tubular memberD: of that section.

The clamps l-I ll' represented in. Figs. l and 4 forma convenient and efficient means of securing the socket A' on the back of the frame of a dental chair where the block or frame of the head-rest is fitted toslide between upright ribs or-guides on thechair- -frame,' and these clamps areshaped to slip over and fit tightly upon theguides. The upper clamp H' is secured'to-the socket by a screw 77, entered from the outside and taking into the clamp, while the lower clamp' H' embraces the socket and holds `it against the frame. A clamp of this character may be secured to the frame of an Operating-chair also by drilling and tapping holes in the frame for screwsthat are inserted through theclamps.

Figs. 6 and 7 represent. a construction of socket which I have used. to good advantage ona dental chair on which the guides for the head-rest are formed to receive a dovetail block or piece on the sliding head-rest and in which the head-rest sets back at such an inclination from the perpendicular that it is necessary to hold the upright member B of my device at a greater or less' degree of inclination to one side or the other away from the perpendicular. This style of clamp is formed of the bar I-l having the chamfered blocks '71, 7# fixed to its front face to set into the dovetailed way or recess in the guides of the head-rest justunder that part and with an eye 7 near the outer end, in whichis fitted the screw-threaded shank H of a socket-piece H H The partl is solid with or is rigid on the screw H and has a'tubular aperture h through it to receiveth'e rod' B. The other part H- is a separate piece fitting loosely 011 a shouldered portion of reduced diameter and IOO IIO

'also partly cnt away to fit around rod B when the same is in the socket. This part forms a clamp to bind the rod B when the shank H is set through the hole inthe bar H and is drawn up by the bntterfly-nut H By unsorewing this nnt the socket can be turned on the bar A to set the rod B at different angles as the adju'stment of the deviee may call for during work.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is

A holder for dental-mirrors and other ap- I pliances on a dentist@ Operating chair consisting of a fixed socket on the chair, a standing rod adj ustable both axially and lon gitndinaily in such socket, two or more extensible haye hereunto set my hand and seal.

OLIVER PERRY MYERS. [L. s.] WVitnesses:

M. REGNER,

CHAs. E. KELLY. 

